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3 years ago

14

PLZ HELP WILL GIVE BRAINS :)

1 answer:

kipiarov [429]3 years ago

5 0

It would be 75 cents per song, I hope you get a good grade!

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The two expressions below are equivalent. Find the values of a and b that make them equivalent.

inn [45]

Answer:

$a=3\text{ and } b=-17$

Step-by-step explanation:

We are given that:

$5x^2+bx-12=(5x+a)(x-4)$

First, we can distribute the right-hand side:

$5x(x-4)+a(x-4)$

Distribute:

$=5x^2-20x+ax-4a$

Rewrite:

$=5x^2+(-20+a)x-(4a)$

Since it is equivalent to the above expression, the coefficients of the variables must match. This means that:

$-20+a=b\text{ and } 12=4a$

Solving for a in the second equation gives:

$a=3$

Therefore:

$b=-20+3=-17$

8 0

3 years ago

Read 2 more answers

You are preparing to tile a rectangular room that is 15 1/2 feet by 18 1/2 feet in size. the tiles are square measuring 12 inche

Bumek [7]

Find the area of the room by multiplying the length by the width:

Area of room = 15.5 x 18.5 = 286.75 square feet.

Divide the total area of the room by the area of a box to find the number of boxes needed.

286.75 / 25 = 11.47

Since you can't buy a partial box, round up to the nearest whole number.

You need B. 12 boxes total.

4 0

4 years ago

Read 2 more answers

I neeeeeeeeeeeed this

Tresset [83]

Answer:

The answer is $\frac{15}{9}$ or 1.666...

Step-by-step explanation:

Reorganize the problem

$\frac{5}{9}$ ÷ $\frac{1}{3}$ =

Reciprocal the Multiplier

$\frac{5}{9}$ ÷ $\frac{1}{3}$ = $\frac{5}{9}$ x $\frac{3}{1}$ = $\frac{15}{9}$ or $\frac{5}{3}$ or 1 $\frac{2}{3}$

Hope this helps!

8 0

3 years ago

Read 2 more answers

Algebra HW. did i do it right?

EastWind [94]

Yes, they are all right.

4 0

4 years ago

Rationalize 2 / 2√2

horsena [70]

Answer:

$\frac{\sqrt{2} }{2}$

Step-by-step explanation:

$\frac{2}{2\sqrt{2} }$ * $\frac{2\sqrt{2} }{2\sqrt{2} }$ = $\frac{4\sqrt{2} }{8}$ = $\frac{\sqrt{2} }{2}$

6 0

4 years ago